00411nam a22001217a 4500008004100000040005500041080001600096100002000112245008400132260005100216300001000267650001200277240906b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aD 001.5bK0  aBlake, Ralph M   aTheories of scientific method: bThe renaissance through the nineteenth century  aWashington: bUniversity of Washington, c1960  a346p.  aScience